flowRSignature DBv2.17.5

Signature Database

Search through all R functions flowR knows, using its signature database (last updated Apr 2026, only most recent package versions).

Search syntax

A query is name(arguments) [properties], every part optional. Without arguments or properties it is just a name, so +, *, [[ and %in% search for exactly that. Click an example to try it.

Names

  • * in a name matches any text, over the whole name (*csv, *read*)
  • only what that package exports
  • a lone * as the name means any function
  • between slashes, a regular expression over the whole name, ignoring case. It works for argument names too:

Arguments

  • (x, y) arguments by name, in order. Without a * the count has to match
  • has an argument called x, anywhere. x[value]? adds a role
  • the first argument has a role, the rest is anything. Several roles: [alias,forced]
  • exactly one argument, called file, with that role
  • * any number of arguments, including none. + one or more
  • one or more arguments, all with the role. [role]* zero or more, all with it
  • at least one argument has the role, the others may be anything

The function

  • a property of the call as a whole. It may come first, last or right after the name, and several add up
  • combines with arguments

Only functions with a flowR signature can answer argument and property questions, and one signature has to satisfy all of it. Typing [ lists the words that fit, grayed when nothing would match. The filter groups above ask the same without typing.

Argument roles

Function properties
filter: match

Type a name to search.